Jefferson County ID United States
| County FIPS | 16051 |
| Largest City | Rigby |
| State | Idaho |
| Latitude | 43.8201 |
| Longitude | -112.3113 |
| Population | 33,154 |
| Density | 30.31 people per square mile |
| Time Zone | America/Boise |
Median household: $86,679
Median individual: $35,765
Mode: 87.5% White
Median house value: $396,786.0
Median: 32.8 years old
With at least college degree: 27.4%
With STEM degree: 45.6%
Never married: 23.8%
Unemployed: 2.7%
All data comes from the SimpleMaps US Counties Database, 2026.
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